Skip to content
    Biology GCSE

    Immune reactions and allergy

    What Immune reactions and allergy means in Biology GCSE, as defined for AQA.

    Definition of Immune reactions and allergy

    Check what you remember

    Read the wording for your board, then hide it and explain Immune reactions and allergy in your own words. Rough notes are fine. This is a self-check, with no mark or grade.

    Reference: AQA

    An immune reaction initially caused by a pathogen can trigger allergies such as skin rashes and asthma, with symptoms arising from immune chemicals such as histamine.
    AQA · Health issues (study guide)

    Topics that use Immune reactions and allergy

    Related terms

    Using Immune reactions and allergy in the exam

    Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.

    Practise Biology questions

    Create a free account to answer exam-style questions on this topic and get feedback on your answers.

    Start free

    A week of Premium from your first lesson · Then the free plan continues · No card, no charge

    All Biology GCSE terms